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European Journal of Ageing

, Volume 15, Issue 1, pp 57–65 | Cite as

Cognitive functioning is more closely related to real-life mobility than to laboratory-based mobility parameters

  • Eleftheria GiannouliEmail author
  • Otmar Bock
  • Wiebren Zijlstra
Original Investigation

Abstract

Increasing evidence indicates that mobility depends on cognitive resources, but the exact relationships between various cognitive functions and different mobility parameters still need to be investigated. This study examines the hypothesis that cognitive functioning is more closely related to real-life mobility performance than to mobility capacity as measured with standardized laboratory tests. The final sample used for analysis consisted of 66 older adults (72.3 ± 5.6 years). Cognition was assessed by measures of planning (HOTAP test), spatial working memory (Grid-Span test) and visuospatial attention (Attention Window test). Mobility capacity was assessed by an instrumented version of the Timed Up-and-Go test (iTUG). Mobility performance was assessed with smartphones which collected accelerometer and GPS data over one week to determine the spatial extent and temporal duration of real-life activities. Data analyses involved an exploratory factor analysis and correlation analyses. Mobility measures were reduced to four orthogonal factors: the factor ‘real-life mobility’ correlated significantly with most cognitive measures (between r = .229 and r = .396); factors representing ‘sit-to-stand transition’ and ‘turn’ correlated with fewer cognitive measures (between r = .271 and r = .315 and between r = .210 and r = .316, respectively), and the factor representing straight gait correlated with only one cognitive measure (r = .237). Among the cognitive functions tested, visuospatial attention was associated with most mobility measures, executive functions with fewer and spatial working memory with only one mobility measure. Capacity and real-life performance represent different aspects of mobility. Real-life mobility is more closely associated with cognition than mobility capacity, and in our data this association is most pronounced for visuospatial attention. The close link between real-life mobility and visuospatial attention should be considered by interventions targeting mobility in old age.

Keywords

Out-of-home mobility Ageing Life-space Instrumented Timed Up-and-Go test Capacity Performance 

Notes

Acknowledgements

We would like to gratefully acknowledge the assistance of Sandra Arenz, Sandra Brück, Henning Voss and Julia Wobst in data collection and Sabato Mellone in data processing and data analysis.

Funding

This study was funded by a grant from the German Sport University to the Graduate College ‘Reduced Mobility in Old Age’ and by the European Commission (FARSEEING, Seventh Framework Program, Cooperation—ICT, Grant Agreement No. 288940).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Eleftheria Giannouli
    • 1
    Email author
  • Otmar Bock
    • 2
  • Wiebren Zijlstra
    • 1
  1. 1.Institute of Movement and Sport GerontologyGerman Sport University CologneCologneGermany
  2. 2.Institute of Physiology and AnatomyGerman Sport University CologneCologneGermany

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